Home
Class 12
PHYSICS
In the phenomenon of electric discharge ...

In the phenomenon of electric discharge through gases at low pressure , the coloured glow in the tube appears as a result of

A

collisions between the charged particles emitted from the cathode and the atoms of the gas

B

collision between different electrons of the atoms of the gas

C

excitation of electrons in the atoms

D

collision between the atoms of the gas

Text Solution

Verified by Experts

The correct Answer is:
C

In the phenomenon of electric discharge tube through gases at low pressure, the coloured glow in the tube appears as a result of collisions between the charged particles emitted from cathode and the atoms of the gas.
Promotional Banner

Topper's Solved these Questions

  • NEET

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise QUESTION|95 Videos
  • NEET

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise MCQ|95 Videos
  • NEET

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise MCQ|95 Videos
  • MOTION IN TWO AND THREE DIMENSION

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise All Questions|47 Videos
  • NEET 2020

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise All Questions|45 Videos

Similar Questions

Explore conceptually related problems

When electric discharge is pressed through neon at low pressure, the colour of the glow is

Assertion : Light is produced in gases in the process of electric discharge through them at high pressure. Reason : At high pressure electrons of gaseous atoms collide and reach and excited state.

Assertion (A), study of discharge of electricity through gases at low pressure resulted in the discovery of cathod rays . Reason (R ): cathod rays are deflected by both magnetic and electric fields and the direction of deflection shows that they are nagatievly charged .

Glow in discharge tube is due to

Goldstein's experiments which involved passing high voltage electricity through gases at very low pressure resulted in the discovery of :

The phenomenon of light associated with the appearance of blue colour of the sky is

NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-NEET-PHYSICS
  1. A particle shows distance-time curve as given in this figure. The maxi...

    Text Solution

    |

  2. An electric kettle takes 4 A current at 220 V. How much time will it t...

    Text Solution

    |

  3. In the phenomenon of electric discharge through gases at low pressure ...

    Text Solution

    |

  4. The circuit is equivalent to -

    Text Solution

    |

  5. If the error in the measurement of radius of a sphere in 2% then the e...

    Text Solution

    |

  6. A thin rod of length L and mass M is bent at its midpoint into two hal...

    Text Solution

    |

  7. A p-n photodiode is made of a material with a band gap of 2.0 eV. The ...

    Text Solution

    |

  8. Two periodic waves of intensities I(1) and I(2) pass through a region ...

    Text Solution

    |

  9. If Q, E and W denote respectively the heat added, change in internal e...

    Text Solution

    |

  10. In the circuit shown, the current through the 4Omega resistor is 1 amp...

    Text Solution

    |

  11. On a new scale of temperature (which is linear) and called the W scale...

    Text Solution

    |

  12. The wave described by y = 0.25 "sin"(10 pi x - 2pit) , where x and y a...

    Text Solution

    |

  13. The electric potential at a point in free space due to a charge Q coul...

    Text Solution

    |

  14. The velocity of electromagnetic radiatior in a medium of permittivity ...

    Text Solution

    |

  15. Two points are located at a distance of 10 m and 15 m from the source ...

    Text Solution

    |

  16. Two simple harmonic motions of angular frequency 100 rad s^(-1) and 10...

    Text Solution

    |

  17. If the lattice parameter for a crystalline structure is 3.6Å, then the...

    Text Solution

    |

  18. Water falls from a height of 60 m at the rate 15 kg//s to operate a tu...

    Text Solution

    |

  19. The energy required to charge a parallel plate condenser of plate sepa...

    Text Solution

    |

  20. A boy is trying to start a fire by focusing sunlight on a piece of pap...

    Text Solution

    |